성견에 있어서 정중구개봉합선의 급속확장에 의한 상악골 주위 봉합의 조직학적 변화에 관한 연구

Abstract

[한글]

저자는 1976년 1월부터 1978넌 12월까지 연세대학교 치과대학 부속병원에 내원한 17,250명 환자 가운데 근관치료를 받은 환자 728명 중 660명 773개 치아를 대상으로 성별, 연령별, 질환별, 부위별에 따르는 근관치료 환자의 실태와 그에 따른 내원회수를 조사하여

다음과 같은 결론을 얻었다.

내원회수를 보면

1. 상악이 5.95회, 하악은 5.88회이었다.

2. 성별로는 남자가 5.79회, 여자가 6.02회이었다.

3. 연령별로는 55세 이상을 제외하고 상악이 하악보다 많았으며, 14세 이하에서 상악7.42회 하악 6.76회로 가장 많았다.

4. 질환별로 치근단농양이 상악에서 6.34회, 하악이 6.14회, 치근단육아종 및 치근단 낭종은 상악에서 2.80회 하악이 3.16회로 나타났다.

조사치아수를 보면

5. 상악 4전치 27.94%, 하악 대구치 25.87%, 상악 대구치 15.13%순이었다.

6. 질환별로 치근단농양이 45.27%, 치수염 37.51%, 치아파절 8.4%순이었다.

7. 20∼34세가 전체의 51.99%를 차지하였다.

AN EXPERIMENTAL STUDY ON HISTOLOGIC CHANGES OF SURROUNDING MAXILLARY SUTURES TO THE

WIDENING MIDPALATAL SUTURE ON THE DOG

Jung Sin Joo

Department of Dental Science, The graduate school, Yonsei Univ.

(Directed by Prof. Young Kyu Ryu, D.D.S.,Ph.D.)

This study was undertaken to observe the histologic changes of surrounding

maxillary sutures to the widening of midpalatal suture, using two adult dogs,

weighing about 10 kg, for experimental, and one for control group. After widening

of the midpalatal suture with expansion screw for ten days was performed, and

followed by sacrifice of experimental animal.

Tissues were excised from 5 surrounding maxillary suture portion such as,

internasal, interfrontal, midsagittal, zygomatroco-temporal, and midpalatal

sutures.

After that, the specimens were fixed and decalcified in 10% formalin sol. and 5%

nitric acid.

Embedding in paraffin and serial sections at a thickness of 5 micron was done,

After hematoxylin-Eosin staining and light microscopic examination, Following

results were obtained:

1. In midpalatal suture area, which showed most prominent histologic change, High

degree of fibronlastic and osteoblastic proliferation lining the bony trabeculae

with osteoid tissue projection into the fibrous connective tissue were observed.

2. In interfrontal suture area, moderate degree of fibroblastic and osteoblastic

proliferation was observed.

3. In internasal suture area, active osteoblastic and osteoclastic proliferation

lining the bony trabeculae was observed. and separation of fibrous connective

tissue was also observed.

4. In midsagittal and zygomatico-temporal suture areas, no histologic changes can

be observed.

[영문]

This study was undertaken to observe the histologic changes of surrounding maxillary sutures to the widening of midpalatal suture, using two adult dogs, weighing about 10 kg, for experimental, and one for control group. After widening

of the midpalatal suture with expansion screw for ten days was performed, and followed by sacrifice of experimental animal.

Tissues were excised from 5 surrounding maxillary suture portion such as, internasal, interfrontal, midsagittal, zygomatroco-temporal, and midpalatal sutures.

After that, the specimens were fixed and decalcified in 10% formalin sol. and 5% nitric acid.

Embedding in paraffin and serial sections at a thickness of 5 micron was done, After hematoxylin-Eosin staining and light microscopic examination, Following results were obtained:

1. In midpalatal suture area, which showed most prominent histologic change, High degree of fibronlastic and osteoblastic proliferation lining the bony trabeculae with osteoid tissue projection into the fibrous connective tissue were observed.

2. In interfrontal suture area, moderate degree of fibroblastic and osteoblastic proliferation was observed.

3. In internasal suture area, active osteoblastic and osteoclastic proliferation lining the bony trabeculae was observed. and separation of fibrous connective tissue was also observed.

4. In midsagittal and zygomatico-temporal suture areas, no histologic changes can be observed.